REDMAP

The project has made effective use of partisan gerrymandering by relying on previously unavailable mapping software, such as Caliper Corporation's Maptitude to improve the precision with which district lines are strategically drawn.

By increasing numbers in a safe Democratic district, Republicans reduce the influence of the liberal voting bloc in both state politics and congressional elections.

The Democrats were unpopular with voters at this time,[6] allowing Republicans to implement a political effort called REDMAP that enabled them to redraw favorable maps with the 2010 Census data.

[2] However, in the 2018 US midterm elections, though the GOP won a majority of Senate seats, it lost the House by a portion roughly equal to the popular vote.

David Daley, author of the 2016 book Ratf**ked: Why Your Vote Doesn't Count, stated that the effects of REDMAP constituted a "wholesale political resegregation along both sides of the Mason–Dixon line" and that redistricting by Republican legislatures redrew maps to "pack as many Black and Democratic voters into as few districts as possible".

[7] Reverend William J. Barber II, co-chair of the Poor People's Campaign, has likewise asserted that Republicans "cracked, stacked, packed, and bleached Black voters".